Process for utilizing the residues obtained in the distillation of zinc.



R. KHLER al o. BALTIN. PROCESS FOR UTILIZING THE RESIDUES OBTAINED INTHE DISTILLATION 0F ZINC.

APPLICATION FILED JAN. 3. |914.

rroR/YEY En STATES PATENT orme mmo'm knnen .um orro harm, or LIPINE,can. :PROCESS Fon UTILIZING THE ItEsIDUEs OBTAINED IN TIIE :oIsTILLATIoNor' ZINC.

Specification of Letters Patent. i

o l Application tiled Januarys, 1914. vSerial 30.810,168. l

To4 all whom t mag/concern: v A

Be it known that/we, RUJoLF KHLER and Orro BA1/HN, citizens of theGerman Em 1re,

and residents of Lipine, Upper Silesia, er-v 5 many, have inventedcertain new and useful Improvements in Processes for Utilizing theResidues Obtained in the Distlllation of Zinc, of which thev followingis aspeciiica-` tion, such as will enable others skilled in the arttowhich it the same.

This invention relates to the smelting of zinc. A characteristic featureof modern zinc smelting is that after the processes'of reduction anddistillation have been completed, the residues are either thrown away asworthless'or are subjected to a further process for extracting vthenon-volatlle metals which they contain, and recovering the remainder ofthe reducing agent.

and that which can be obtained from the combustion of the carbon thereofhas not hitherto been directly utilized; and it is do this. l. J Anotherobject of the invention is to pr vide aA process for separating themetals given oit' as vapors or oXids from the heated residue.

The ligure of the accompanying drawing shows, by way of example, avertical section of an apparatus by which the new process may be easilycarried out.

The process is very simple. Directly below the muiiie a there is a shaftlike chamber b which at the top communicates with the bottom of themuiiie. A fire-proof slide c serves to entirely cut 0E at willthecommunl-` cation between said chamber and Inutile, and

the displaceable grate al prevents the dropping of the new charge of theInutile Into chamber while at the same-time at one part the bottom ofrthe muftle communication with the chamber'is established.

After each reduction has been accomplished, the slide c and the grate dare ulled out entirely, and the residue is alowed to drop immediatelyinto the chamber b. TheV grate is then replaced and a new chargeintroducedinto the muilie. .A'

blast of air or gas vintroduced through the channel e then and the heatof the residue and that en,- erated by the combustion of the car onthereof as well as the vapors from the resiappertains to make and use,A

The heat contained in the glowing residue,

one "of the objects of the present invention to',v

Vbut also the heat @A further advantage consists in the fact theresidue, thereln (zinc,

passes through the residuev due'are then cnducted'directly through the`new charge.

' As the vapors from the residue which may,

contain metalssuch as zinc lead and cadlmlum and (or) the ox'ids thereofpass through the new charge, the new charge acts vrammed1mg. c, reis. A

somewhat as a filter and separates out a por-- l tion of the metalliclvapor or oxid, that passing through being further separated in thecondenser. l

After the operation upon the residue is ended, the slide c is againpulled over the grate, so that communication between the i chamber andmullie is absolutely cut oliU and after the reduction of the new chargeis completed, the operation is'repeated..

This tages The intensity of the heat necessarily appliedto the outerwall of the retort is decreased, and too sudden reduction of the ore isavoided.

The whole of the charge of the mutfleis quickly brought to a temperaturenear the reduction point. c

Not only "is the heat obtainable from the combustion carbon in theresidue utilized, without necessitating special preparation,

remaining in this residue. that by the passage of air or gas through thereduced metal contained zinc, lead or cadmium present in the form ofoxlds, or .comblned w1th silicio or other lead, cadmium) as well as thevprocess has the following advan-v acids, as a result ofthe reaction ofthe re- 'maining reducing agent which burns in the current offair,passes either as a metallic vapor or as an oXid into the charge ofthemuiie which acts as a lter, and separates further in the condenser. I

. We claim as our4 invention 1. A process for utilizing the'residue ofzinc distillation, said process comprising placing la new charge of zincore above a glowing resid'ue ofv av vprevious charge in which residuesome of the luxremains; heatin and'reducing the new charge from there'sldue by passing a strong blast through the residue and thencethrough the new charge; charge, 1 and condensing vwhile shut ofi fromthe drafts of gas.

2. A proce for utilizing the residue of zinc distillation, said processcom rising placing 'a new charge'vof `zinc ore a ve a and heating-anddistilling the new the vapors thereof,

glowing residue of a previous charge, driv ing lnto the new chargemetallic vapors, from the residue by passing a strong blast through theresidue and thence throughthe new charge and heating and distilling thenew charge,v and condensing the vapors' thereof, while shut off from thedrafts of gas.

3. A process for utilizing the residueof zinc distillation, said processcom rlsmg' densing the vapors thereof, while shut of from the drafts ofgas.

4c., A process for utilizing the residue of zinc distillation, saidprocess comprising placing a new charge of zinc ore above a glowingresidue of a previous charge; driving into the new charge metallicvapors and oXids from the residue by passing a strong blast through theresidue and thence through the new charge, therebylpartially filteringthe blast by the new charge and retaining in the new charge a portion ofsaid vapors and oxids; collecting and condensing the vapors and oxidsand then heatingfand distilling namens the new charge, and condensingthe vapors thereof, while shut od from the drafts of gas.

5. A process passing a strong blast through the residue and thencethrough the new charge, thereby partially ltering the blast by the newvcharge and retaining in the new charge a portion of said vapors;collecting and condensing the vapors which pass through the new charge;inclosing and shutting 0H' from the new charge access thereto of draftsof gas; and heating and distilling the new charge, and condensing the1vapors thereof,

lwhile shut o' from the drafts of gas.

ln witness whereof we have hereunto set our hands in presence of twowitnesses.

nnnonrv nonnen. Y.

@TTU BALTXN.

Witnesses:

Ennsr Kanz, En'rnn Firmament Nrsrrrennnn.;

i for utilizing the misgaat zlnc distillation, said process o'omprlsingto

